Source assertion
PDBe/SIFTS maps PDB 3KKX to UniProt P00918 with chain-level identity and coverage retained.
Experimental structure
Neutron structure of human carbonic anhydrase II
- PDB ID
3KKX- Experimental method
- Neutron Diffraction
- Resolution
- %!f(*float64=0xc0000682d0) Å
- SIFTS identifier
CAH2_HUMAN- Deposited
- 20091106
- Released / revised
- 20100112 / 20230906
Chain-level mapping
| Entity | Chain | Structural asym | Identity | Coverage | UniProt range |
|---|---|---|---|---|---|
| 1 | A | A | 100.0% | 100.0% | 1–260 |
Experimental constructs
| Entity | Chains / asym IDs | Molecule | Length | Mutation flag | Preparation |
|---|---|---|---|---|---|
| 1 | A / A | Carbonic anhydrase 2polypeptide(L) | 260 residues | not reported in admitted source fields | Genetically manipulated |
Interpretation boundary
This record represents an experimentally determined structure, not a predicted model. A co-crystal ligand, if present upstream, does not by itself establish affinity. This record does not infer kinetics, pathway rate, or metabolic flux.
Snapshot provenance
Each retained corpus build input is identified by retrieval time, snapshot path, SHA-256 digest, and exact upstream request. The snapshot files are not embedded in the served binary; the provenance identifiers remain dependencies of this one admitted record, not interchangeable citations.
| Retrieved | Snapshot | SHA-256 | Upstream request |
|---|---|---|---|
| 2026-07-14T09:21:31Z | raw/uniprot/entries/P00918.json | ed44906dd1b976f4c8b0399e9e3a7a4af09b673c035a201e218a4880821c1179 | Open exact source |
| 2026-07-14T09:21:40Z | raw/pdbe/mappings/3kkx.json | 52bc292ffe379487490d3915b8d3c54729f184979f2860d7a67188610e99f197 | Open exact source |
| 2026-07-14T09:22:14Z | raw/pdbe/summary/chunk-02.json | 79ac3fb4e9e30c8c858b4d8ed8bbe6f85e8e0d0e3630627a999691f40a3d330d | Open exact source |
| 2026-07-14T09:22:14Z | raw/pdbe/experiment/chunk-02.json | e42f681713cd9cdce851cc48738b3c6e0f0c075d0006a640c484bcab84561898 | Open exact source |
| 2026-07-14T09:22:15Z | raw/pdbe/molecules/chunk-02.json | 27833f4d4cb9a9bfcb110f6e551fe2a5ccef01ccea4dda947132af6c51bd66e6 | Open exact source |